Alley Assailant

Creature — Vampire Rogue — {2}{B}

This creature enters tapped. Disguise {4}{B}{B} (You may cast this card face down for {3} as a 2/2 creature with ward {2}. Turn it face up any time for its disguise cost.) When this creature is turned face up, target opponent loses 3 life and you gain 3 life.